| Commit message (Expand) | Author | Age | Files | Lines |
|---|
| * | fix pthread_attr_* implementations to match corrected prototypes | Rich Felker | 2011-03-11 | 4 | -4/+4 |
| * | fix failure behavior of sem_open when sem does not exist | Rich Felker | 2011-03-10 | 1 | -1/+5 |
| * | fix some semaphore wait semantics (race condition deadlock and error checking) | Rich Felker | 2011-03-10 | 2 | -1/+7 |
| * | fix sem_open and sem_close to obey posix semantics•••multiple opens of the same named semaphore must return the same
pointer, and only the last close can unmap it. thus the ugly global
state keeping track of mappings. the maximum number of distinct named
semaphores that can be opened is limited sufficiently small that the
linear searches take trivial time, especially compared to the syscall
overhead of these functions.
| Rich Felker | 2011-03-10 | 3 | -38/+85 |
| * | optimize pthread termination in the non-detached case•••we can avoid blocking signals by simply using a flag to mark that the
thread has exited and prevent it from getting counted in the rsyscall
signal-pingpong. this restores the original pthread create/join
throughput from before the sigprocmask call was added.
| Rich Felker | 2011-03-10 | 2 | -4/+16 |
| * | fix errors in sigqueue (potential information leak, wrong behavior)•••1. any padding in the siginfo struct was not necessarily zero-filled,
so it might have contained private data off the caller's stack.
2. the uid and pid must be filled in from userspace. the previous
rsyscall fix broke rsyscalls because the values were always incorrect.
| Rich Felker | 2011-03-10 | 1 | -5/+7 |
| * | security fix: check that cancel/rsyscall signal was sent by the process itself | Rich Felker | 2011-03-10 | 1 | -0/+3 |
| * | more cancellation points: tcdrain, clock_nanosleep | Rich Felker | 2011-03-10 | 2 | -2/+12 |
| * | remove useless return value checks for functions that cannot fail | Rich Felker | 2011-03-10 | 1 | -3/+2 |
| * | make sigsuspend a cancellation point | Rich Felker | 2011-03-10 | 1 | -1/+6 |
| * | make sigtimedwait a cancellation point | Rich Felker | 2011-03-10 | 1 | -0/+3 |
| * | don't fail with EINTR in sigtimedwait•••POSIX allows either behavior, but sigwait is not allowed to fail with
EINTR, so the retry loop would have to be in one or the other anyway.
| Rich Felker | 2011-03-10 | 1 | -6/+6 |
| * | fix sigsuspend syscall | Rich Felker | 2011-03-10 | 1 | -1/+1 |
| * | make sigaltstack work (missing macros in signal.h, error conditions) | Rich Felker | 2011-03-10 | 1 | -1/+11 |
| * | fix errno behavior in clock_* functions•••these functions are specified inconsistent in whether they're
specified to return an error value, or return -1 and set errno.
hopefully now they all match what POSIX requires.
| Rich Felker | 2011-03-10 | 3 | -3/+0 |
| * | fix error handling for pthread_sigmask•••it must return errno, not -1, and should reject invalud values for how.
| Rich Felker | 2011-03-09 | 2 | -1/+15 |
| * | make fork properly initialize the main thread in the child process | Rich Felker | 2011-03-09 | 1 | -0/+7 |
| * | optimize pthread initialization•••the set_tid_address returns the tid (which is also the pid when called
from the initial thread) so there is no need to make a separate
syscall to get pid/tid.
| Rich Felker | 2011-03-09 | 1 | -2/+2 |
| * | fix race condition in raise - just mask signals•••a signal handler could fork after the pid/tid were read, causing the
wrong process to be signalled. i'm not sure if this is supposed to
have UB or not, but raise is async-signal-safe, so it probably is
allowed. the current solution is slightly expensive so this
implementation is likely to be changed in the future.
| Rich Felker | 2011-03-09 | 1 | -9/+9 |
| * | fix raise semantics with threads. | Rich Felker | 2011-03-09 | 1 | -1/+12 |
| * | simplify and optimize pthread_mutex_trylock | Rich Felker | 2011-03-08 | 1 | -17/+16 |
| * | rwlock trylock functions were wrongly returning EAGAIN instead of EBUSY | Rich Felker | 2011-03-08 | 2 | -3/+3 |
| * | fix major breakage in pthread_once (it was always deadlocking)•••the issue was a break statement that was breaking only from the
switch, not the enclosing for loop, and a failure to set the final
success state.
| Rich Felker | 2011-03-08 | 1 | -8/+7 |
| * | fix and optimize non-default-type mutex behavior•••problem 1: mutex type from the attribute was being ignored by
pthread_mutex_init, so recursive/errorchecking mutexes were never
being used at all.
problem 2: ownership of recursive mutexes was not being enforced at
unlock time.
| Rich Felker | 2011-03-08 | 4 | -25/+19 |
| * | implement pthread_mutexattr_[gs]etpshared functions | Rich Felker | 2011-03-08 | 2 | -0/+16 |
| * | disallow cpu time clocks as condattr clock values | Rich Felker | 2011-03-08 | 1 | -1/+1 |
| * | fix off-by-one error in sem_(timed)wait (using old sem value instead of new) | Rich Felker | 2011-03-07 | 1 | -1/+1 |
| * | use the selected clock from the condattr for pthread_cond_timedwait | Rich Felker | 2011-03-07 | 3 | -1/+3 |
| * | implement pthread_rwlockattr_* (essentially no-ops) | Rich Felker | 2011-03-07 | 4 | -0/+28 |
| * | implement pthread_condattr_* interfaces•••note that, while the attributes are stored, they are not used in
pthread_cond_init yet.
| Rich Felker | 2011-03-07 | 6 | -0/+45 |
| * | reject invalid attribute settings•••note that this is a pedantic conformance issue and waste of code. it
only affects broken code or code that is probing for conformance.
| Rich Felker | 2011-03-07 | 2 | -0/+2 |
| * | implement barrier attribute functions (essentially no-ops) | Rich Felker | 2011-03-07 | 4 | -0/+27 |
| * | enforce stack size min in pthread_attr_setstacksize | Rich Felker | 2011-03-04 | 1 | -1/+1 |
| * | implement POSIX semaphores | Rich Felker | 2011-03-04 | 10 | -0/+201 |
| * | optimize POSIX TSD for fast pthread_getspecific | Rich Felker | 2011-03-03 | 4 | -9/+14 |
| * | implement POSIX shared memory | Rich Felker | 2011-03-03 | 2 | -0/+42 |
| * | depends on settimeofday which needs _GNU_SOURCE feature test | Rich Felker | 2011-03-01 | 1 | -0/+1 |
| * | implement futimens and utimensat | Rich Felker | 2011-02-27 | 2 | -0/+13 |
| * | implement fexecve | Rich Felker | 2011-02-27 | 1 | -0/+10 |
| * | cleanup utf-8 multibyte code, use visibility if possible•••this code was written independently of musl, with support for a the
backwards, nonstandard "31-bit unicode" some libraries/apps might
want. unfortunately the extra code (inside #ifdef) makes the source
harder to read and makes code that should be simple look complex, so
i'm removing it. anyone who wants to use the old code can find it in
the history or from elsewhere.
also, change the visibility of the __fsmu8 state machine table to
hidden, if supported. this should improve performance slightly in
shared-library builds.
| Rich Felker | 2011-02-27 | 3 | -84/+5 |
| * | fix missing prototype for strsignal | Rich Felker | 2011-02-26 | 1 | -0/+1 |
| * | various changes in preparation for dynamic linking support•••prefer using visibility=hidden for __libc internal data, rather than
an accessor function, if the compiler has visibility.
optimize with -O3 for PIC targets (shared library). without heavy
inlining, reloading the GOT register in small functions kills
performance. 20-30% size increase for a single libc.so is not a big
deal, compared to comparaible size increase in every static binaries.
use -Bsymbolic-functions, not -Bsymbolic. global variables are subject
to COPY relocations, and thus binding their addresses in the library
at link time will cause library functions to read the wrong (original)
copies instead of the copies made in the main program's bss section.
add entry point, _start, for dynamic linker.
| Rich Felker | 2011-02-24 | 3 | -5/+21 |
| * | add implementation of memccpy function | Rich Felker | 2011-02-24 | 1 | -0/+32 |
| * | fix backwards conditional in stpncpy•••this only made the function unnecessarily slow on systems with
unaligned access, but would of course crash on systems that can't do
unaligned accesses (none of which have ports yet).
| Rich Felker | 2011-02-24 | 1 | -1/+1 |
| * | rewind must clear the error indicator in addition to seeking | Rich Felker | 2011-02-22 | 1 | -2/+5 |
| * | change errno to static linkage (improves PIC code generation) | Rich Felker | 2011-02-21 | 1 | -4/+2 |
| * | remove sample utf-8 code that's not part of the standard library | Rich Felker | 2011-02-21 | 1 | -47/+0 |
| * | use an accessor function for __libc data pointer when compiled as PIC•••prior to this change, a large portion of libc was unusable prior to
relocation by the dynamic linker, due to dependence on the global data
in the __libc structure and the need to obtain its address through the
GOT. with this patch, the accessor function __libc_loc is now able to
obtain the address of __libc via PC-relative addressing without using
the GOT. this means the majority of libc functionality is now
accessible right away.
naturally, the above statements all depend on having an architecture
where PC-relative addressing and jumps/calls are feasible, and a
compiler that generates the appropriate code.
| Rich Felker | 2011-02-20 | 2 | -4/+19 |
| * | avoid referencing address of extern function from vdprintf•••this change is in preparation for upcoming PIC/shared library support.
the intent is to avoid going through the GOT, mainly so that dprintf
is operable immediately, prior to processing of relocations. having
dprintf accessible from the dynamic linker will make writing and
debugging the dynamic linker much easier.
| Rich Felker | 2011-02-20 | 1 | -1/+6 |
| * | cleanup asprintf stuff | Rich Felker | 2011-02-20 | 2 | -2/+2 |
